<!-- html客户端 -->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
<input type="text" id="send">
<input type="button" id="submit" value="send">
<input type="text" id="receive">
<script>
    // 回声api，回传你发送的信息
    let ws = new WebSocket('ws://localhost:8080')
    ws.onopen = function () {
        console.log('connected')
    }
    ws.onmessage = function (msg) {
        console.log(msg)
        document.getElementById('receive').value = msg.data
    }
    ws.onclose = function () {
        console.log('closed')
    }

    document.getElementById('submit').onclick = function () {
        let msg = document.getElementById('send').value
        ws.send(msg)
    }
</script>
</body>
</html>